By Craig Zacker
Ace your guidance for the abilities measured through CompTIA community+ examination N10-005. paintings at your individual speed via a sequence of classes and experiences that absolutely conceal each one examination aim. Then, strengthen what you’ve discovered by means of using your wisdom to real-world case situations and perform workouts. This advisor is designed to aid utilize your research time.
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Extra resources for CompTIA Network+ Training Kit (Exam N10-005)
When a computer has to transmit a datagram that is too large for the data-link layer network, it splits the datagram into fragments and transmits each one in a separate data-link layer frame. Depending on the nature of the intervening networks, individual fragments might be fragmented again before they complete their journey. It is not until the fragments reach their final destination—that is, the system identified by the destination address in the network layer protocol header—that the network layer protocol reassembles them into the original datagram.
Table 1-5 Transport Layer Protocol Cross-References Transport Layer Protocols Chapter Coverage Transmission Control Protocol (TCP) Chapter 8, “The Transport Layer” User Datagram Protocol (UDP) Chapter 8, “The Transport Layer” The Session Layer The boundary between the transport layer and the session layer, as shown in Figure 1-18, is a major division in the protocol stack. Application Presentation Session Transport Network Session Layer Dialog Control Dialog Separation 20 Other Functions Data-Link Physical Figure 1-18 The session layer of the OSI model.
Some of the most important protocol functions are described in the following list. 6 Chapter 1 Networking Basics ■■ ■■ ■■ ■■ ■■ ■■ ■■ ■■ Addressing A system for assigning a unique designation to each computer on a network and using those designations to transmit data to specific computers Acknowledgment The transmission of a return message by the receiving system to verify the receipt of data Segmentation The division of a large block of data into segments sufficiently small for transmission over the network Flow control The generation of messages by a receiving system that instruct the sending system to speed up or slow down its rate of transmission Error detection The inclusion of special codes in a data transmission that the receiving system uses to verify that the data was not damaged in transit Error correction The retransmission of data that has been corrupted or lost on the way to its destination Encryption The encoding of data with a cryptographic key to protect it during transmission over the network Compression The removal of redundant information from data blocks to minimize the amount of data transmitted over the network Most of the networking protocols in use today are based on open standards so that different manufacturers can produce implementations that are fully compatible.